Руководство По Установке для Cisco Model 6109 6 MHz Off-Air Reference (NTSC)
Chapter 3 USRM Web Interface
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HaPrimary - Network Config Page
The HaPrimary and HaStandby software components work together to implement
the m:n redundancy. The HaPrimary component implements the primary side of the
high-availability support. The standby side connects to the primary side to get the
primary server database and maintain the state of the primary database. The
primary and standby servers communicate using the database synchronization
protocol. This protocol is a proprietary protocol implemented on TCP. The primary
acts as a server and passively waits for connection from the standby. The standby
acts as a client and initiates the connection to the primary server.
Note: m:n redundancy will be available in a future release, and will only be available
Note: m:n redundancy will be available in a future release, and will only be available
in non-supervised mode. In supervised mode, it is 1:n where n = 8 or fewer primary
servers.
Upon connection to the primary server, the HaStandby component requests
Upon connection to the primary server, the HaStandby component requests
database synchronization. The primary server responds by sending a compressed
version of the entire database. The components in the primary are transmitted one at
a time until all components have been transferred. Any changes-of-state that occur
during the transfer are inserted into a change-of-state queue. When the last
component has been transferred, the change-of-state queue is transmitted. Upon
completion of transfer of the change-of-state queue, the standby is synchronized
with the primary. The primary sends a transfer-complete message causing the
standby to mark its state as ready to assume control for the primary.
The HaPrimary - Network Config page allows specification of the network
The HaPrimary - Network Config page allows specification of the network
configuration for the HaPrimary component.
The following illustration shows the HaPrimary - Network Config page.
The following illustration shows the HaPrimary - Network Config page.
Parameters
The following table explains the HaPrimary - Network Config page parameters.
The following table explains the HaPrimary - Network Config page parameters.
Parameter
Description
HaPort
Specifies the port used for the database synchronization
protocol. The value must agree with that used by the
HaStandby component in the standby server.
Important: The USRM must be restarted after changing
Important: The USRM must be restarted after changing
the value. You must be logged in at service level to
modify this parameter.